Update boost url

The latest subtree update pulled in new boost url, and JOY! is API
incompatible with new boost-url.  We need the new boost-url in CI, then
this needs to be syncronized with

https://gerrit.openbmc-project.xyz/c/openbmc/bmcweb/+/50916

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I8e147370cb787706270d49344e870da26e274aa0
1 file changed